Midtown Water Transmission Main

Midtown Water Transmission Main Project

Abstract

Midtown Anchorage currently has two production wells which when pumping at full capacity create a hydraulic high point in the system, resulting in blocked flow from east Anchorage sources through the MacInnes pressure relieve valve (PRV) near the A-C Street coupling. The 2012 Water Master Plan recommends construction of a large diameter water transmission main between 4th Avenue and Tudor Road along the A-C Street coupling. A new large diameter main will allow for wider use of the wells' production capacity along with providing a redundant feed to the airport, midtown, and downtown areas. Without the redundancy, a major water break on the east side of Anchorage could leave midtown and west Anchorage without water for a significant period of time. The new main is expected to meet the projected demands for this area of the city over the next twenty years.

The Seawolf Engineering Team, having been awarded this project by AWWU, agreed to complete the following deliverables by April 2013: